Veteran Western Bulldogs defender Brian Lake will play his 200th AFL game with Hawthorn after the club agreed to trade him to the Hawks.

Lake was drafted by the Bulldogs in 2001 and has been a one-club man for more than a decade, racking up 197 senior football games in the red and blue.

But the Bulldogs announced on Monday that the 30-year-old has been dealt to the grand final runners-up for the Hawks' first two selections in the 2012 National Draft, picks 21 and 41, and a second-round selection.

The trade means six of the top 50 picks will go to Whitten Oval, a move list manager Jason McCartney described as unprecedented.

"The accumulation of six picks inside 50 presents the opportunity the likes of which this club has not seen before to recruit the core list around which we will build the future of this football club," he said in a statement.

"In an increasingly competitive environment our future success going forward is contingent on what we do today and given the stage Brian's career is at - we see this as a very good proposition for the club.

"We thank Brian for his contribution to the football club.

"In what is an exciting time for the club we are looking forward to continuing to develop the team under Brendan McCartney."

Full-back Lake played 20 games for the Bulldogs in 2012 after appearing in just five the previous season due to injury.

Hawthorn football manager Mark Evans said the Hawks were pleased with the acquisition of Lake.

"Brian is a fantastic addition to our list, and will complement our defensive unit extremely well," he said in a statement.

"His experience will be highly valuable to our group of relatively young defenders and he will add greatly to our side's depth."

In other AFL trade period news on Monday:

Fremantle made an offer to Power restricted free agent Danyle Pearce. Port Adelaide declined to match the offer, meaning Pearce is free to join the Dockers.

Brendon Goddard will move from St Kilda to Essendon after the Saints elected not to match the Bombers' offer.

Unrestricted Adelaide free agent Chris Knights is free to join the Tigers after Richmond tabled an offer for the 96-game midfielder who was selected in round four of the 2004 draft.

The Tigers may also secure the services of Port backman Troy Chaplin after the Power chose not to match Punt Road's offer on the restricted free agent 26-year-old.

West Coast's Quinten Lynch may become a Magpie after Collingwood made moves on the 2006 premiership forward.

Meanwhile Geelong star Shannon Byrnes can become a Demon after Melbourne tabled an offer for the 108-game forward.

And the Giants traded prospect Tom Lee and their round two and three draft picks to St Kilda for the Saints' first-round choice (currently 12).